To Write a Shell script that takes two arguments.

bobby36 · #1 (**permalink**) 04-05-2007

How to write a shell script tht takes two arguments.The first being a line of text,the second being your newly created file(x nof lines and content of ur choice).

The script should take the first argument and insert it into the very top(the first line)of the file named in your second argument.

Note : the file must contain the original name.

jim mcnamara · #2 (**permalink**) 04-05-2007

Sounds like homework....

Code:

#!/bin/ksh
# addline.sh
echo "$1" > tmp.$$
cat "$2" >> tmp.$$
mv tmp.$$ "$2"

usage: addline "stuff to write on line one" myfile

bobby36 · #3 (**permalink**) 04-05-2007

Thanks Jim, I appreciate for your quick response.I know this is a basic script but I'm alien to scripting and more over I'm into testing so dont even know abcd of scripting.I was given a task in shell scripting to complete.

The off uses bash not ksh.So could you please write it in bash.I really appreciate for your help.I have got 5 more simple questions hope you will answer them aswell.

cfajohnson · #4 (**permalink**) 04-05-2007

Quote:

Originally Posted by bobby36

How to write a shell script tht takes two arguments.The first being a line of text,the second being your newly created file(x nof lines and content of ur choice).

The script should take the first argument and insert it into the very top(the first line)of the file named in your second argument.

Note : the file must contain the original name.

This will work in any POSIX shell (including bash, ksh, etc.):
Code:
{
  printf "%s\n" "$1"
  cat "$2"
} > tempfile.$$
mv tempfile.$$ "$2"

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